BNC 845-M User Manual

Page 37

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37 
 

Model 845-M Programmer’s Manual V1.1 2011

[SOURce]:FM Subsystem (Frequency Modulation)

Command

Parameters

Unit (default)

[SOURce:]FM:DEViation

<value>

[SOURce:]FM:SENSitivity

<value>

10000 Hz/V

[SOURce:]FM:INT:FREQuency

<value>

[SOURce:]FM:SOURce

INTernal| EXTernal

EXT

[SOURce:]FM:STATe

ON|OFF|1|0

OFF

[SOURce:]FM:COUPling

DC | AC

AC

:

FM:DEViation

[SOURce]:FM:SENSitivity <value>
[SOURce]:FM: SENSitivity?

This command sets the frequency modulation deviation. This setting will be used if :FM:SOURce is set to
LFGenerator.

The variable <value> is expressed in units of Hertz.

*RST 10000

:

FM:SENSitivity

[SOURce]:FM:SENSitivity <value>
[SOURce]:FM: SENSitivity?

This command sets the frequency modulation deviation per one volt peak amplitude signal

input. This setting will be used if :FM:SOURce is set to EXTernal. The
variable <value> is expressed in units of Hertz per Volt.

*RST 10000

:

FM:INT:FREQuency

[SOURce]:FM:INT:FREQuency <value>
[SOURce]:FM:INT:FREQuency?

This command sets the frequency modulation rate in Hz. This setting will be used if :FM:SOURce

is set to INTernal.

The variable <value> is expressed in Hertz.

*RST

:

FM:SOURce

[SOURce]:FM:SOURce EXTernal | INTernal

[SOURce]:FM:SOURce?

This command selects the FM modulation signal source. If INTernal is selected, an internal modulation
source is applied. If EXTernal is selected, the device’s
)M input (at the rear panel) is activated.

*RST EXT

:

FM:STATe

[SOURce]:FM:STATe ON|OFF|1|0
[SOURce]:FM:STATe?

This command turns the frequency modulation on or off.

*RST OFF

:FM::COUPling


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